If You own IS-4, then Hide these spots and If you ever face them in KING of Kings tournament, try to shoot these spots. I suggest #1 weak spots is best.

Also, I will upload more weak spots videos so You guys can perform well in KING of Kings 1 vs 1 Tournament.
I am only posting front armor hit spots because, from sides and back you can do well, just learn front weak spots.
Good Look Everyone for KoK Tournament!